Mary returns to her small Irish hometown after a brief stint in prison. Her best friend, Charlene, is about to get married, and Mary is the maid of honor. However, when Charlene refuses Mary a plus one, believing she’ll struggle to find a date, Mary becomes determined to prove her wrong.

With wit and a rebellious edge, Darren Thornton’s charming debut feature proves that even “mad” girls deserve their sweet coming-of-age story. Seána Kerslake is irresistible as the titular firecracker, her explosive personality hiding an endearing mess of virulent insecurities and unavowed desires.